.title {
  font-size: 34px;
  font-family: PingFangSC-Medium, PingFang SC;
  font-weight: 500;
  color: #333333;
  line-height: 48px;
  margin-top: 40px;
}
.big-img {
  margin-top: 20px;
  height: 675px;
  position: relative;
  cursor: pointer;
  border-radius: 1.5rem;
  overflow: hidden;
  .img {
    width: 100%;
    height: 675px;
  }
  .play {
    position: absolute;
    display: none;
    top: 50%;
    left: 50%;
    width: 100px;
    height: 100px;
    transform: translate(-50%, -50%);
    transition: all 0.3s;
  }
  &:hover {
    .play {
      display: block;
    }
  }
}
.course-imgs {
  margin-top: 20px;
  @include clearfix;
  margin-left: -8px;
  .course-img {
    width: 192px;
    height: 120px;
    margin-left: 8px;
    cursor: pointer;
    float: left;
    .img {
      width: 192px;
      height: 120px;
      border-radius: 8px;
    }
  }
}
.tit {
  margin-top: 40px;
  font-size: 28px;
  font-family: PingFangSC-Medium, PingFang SC;
  font-weight: 500;
  color: #333333;
}
.desc {
  margin-top: 20px;
  font-size: 24px;
  font-family: PingFangSC-Regular, PingFang SC;
  font-weight: 400;
  color: #666666;
  line-height: 34px;
  white-space: pre-wrap;
}
.text-wrapper {
  white-space: pre-wrap;
}
.mytit {
  padding-left: 18px;
  position: relative;
  line-height: 48px;
  &:after {
    content: '';
    position: absolute;
    left: 0;
    top: 7px;
    width: 8px;
    height: 34px;
    background: $theme-color;
  }
}